Knotting device, particularly for uniting together the threads of warps



w. HAMMER 1,779,312 momma DEVICE, PARTICULARLY FOR UNITING TOGETHER THE THREADS 0F WARPS .Ogt. 21, 1930.

Filed March 29, 1928 6 Sheets-Sheet 1 W. HAMMER Oct. 21, 1930.

KNOTTING DEVICE, PARTICULARLY FOR UNITING TOGETHER THE THREADS OF WARPS Filed March 29, 192 8 6 Sheets-Sheet 2 0a. 21, 1930. w; HAMMER 1,779,312

KNOTTING DEVICE, PARTICULARLY FOR UNITING TOGETHER THE THREADS 0F WARPS Filed March 29, 1928 s Sheets-Sheet :5

Oct. 21, .1930. HA MER 1,779,312

KNOTTING DEVICE, PARTICULARLY FOR UNITING TOGETHER THE THREADS OF WARPS Fild March 29, 1928' SSheets-Sheet 4 67 9 J 6! @y/l 59 y I l 59 I 59 i E I I i 69 70 :75! "/2 Oct. 2l,1930. I w. HAMMER v 1,779,312

KNOTTING DEVICE, PARTICULARLY FOR UNITING TOGETHER THE THREADS OF WARPS I Filed March 29, 1928 6 Sheets-Sheet 5 W. HAMMER Oct. 21, 1930.

KNOTTING DEVICE, PARTICULARLY FOR UNI-TING TOGETHER THE THREADS OF WARPS Filed March 29; 1928 6 Sheets-Sheet 6 I WILLIBALD HAMMER, OF

I together the threads Patented a. 21, 1930 UNITED sT A. e., or USTER,

zNor'rING mwron, PARTICULARLY 1703 um'rme 'roen'rnrla THE rrmmns orwARrs Application filed March 29, 1928, Serial No.

The subject matter of the present invention is a knotting device particularly for uniting of two warps, which, for the purposeof ensuringa quick working is provided with a knotting needle displaceable in a guide spindle and a thread layer, movable in the circumferential and in the axial directionof said guide spindle, which places the free ends ofthe twothreads to be united together and arranged beside each other around the guide spindle for forming a first loop and thereupon brings the two I threads by forming a second loop cooperating with the first loop over the endfacing of the guide spindleinto the path of the knotting needle, whereupon the latter causes the second thread loop to be pulled through the first thread loop by withdrawing the pair of threads from the guide spindle, knot is formed.

A constructional example of a knotting device in combination with auxiliary means for forming a knotting machine servingto connect the thread ends of two warps is illustrated on the accompanying drawings, in which Fig. 1 shows in a front .view a knotting machine of which, however, onlythe parts necessary for explaining the operation, are illustrated, I

Fig. 2 is a side elevation of the machine seen from the right hand side in Fig. 1, the knotting device proper being omitted.

Fig. 3 is a section along line III-III in Fig. 1 in which the knotting device is shown;

Fig. 4: shows part of the machine seen from the left hand side in Fig. 1;

Fig. 5 isa side elevation of the knotting machine showing the warp beam with the new warp, the old warp and the harnesses;

Fig. 6 shows a thread separating device in a horizontal section along line VI-VI in Fig. 1;

Fig.

whereby a 7 shows in elevation and on a larger 5 scale a thread feeler device;

Fig. 8 is a plan view of Fig. 7;

Fig. 9 shows in a plan view a thread transfer member and its driving means;

Fig. 10 is a horizontal section throu h a thread clamping and cutting device rom device proper,

TES PATENT ojFrlclai USTER, SWITZERLAND, ASSIGNOR To run rmm z nnnwmnn' SWITZERLAND v 265,716, and inSwitzerland April 7, 1927.

Figs; 14, and 1 appertaining thereto, of whichFigs. 14 and 15 are placed at right angles to Fig. 16,

Figs. 17, 18 and in a plan View respectivelythe knotting .Fig. 20 shows vertical section the'knotting device, I

Fig, 21 shows in elevation a detail (clamping devicefor the thread) of ;the knotting device, f I Figs. 22 and 23 show a further detail (thread cutter) in two difierent elevations, Fig. 24 shows also. a detail (thread laying device)in elevation,

Figs. 25, 26 and27 knotting operation.

serve for explainingthe Figs. 28 and 29 show the knotting mechanism in two rectangularpositions before starting knotting. I e Figs. 30 and 31 are similar elevationsin two operating positions. I Fig. 321s a cross section ofFig. 28. .Figs. 33 and 34 are plan views of Figs. 30 and 31. I I The knotting machine comprises two beds 1 and ,2 supported by the machine frame 150 Fig. 5 and provided with bars l and2' respectively for clamping the threads a of the old warp and the threads I) ofthe new warp; to this end thebed 1 can be moved away from the bed 2. On themachine frame 150 (Fig. 5') thewarp beam 15,1f0n which the new warp a 1s wound ismounted as well as a roller 1'52 serving to take-up the old warp b: 153 denotes the harnesses supported by an arm 154. With the roller 152 a gear wheel at the side of toothed racks provided on the v thread clamping and cutting devicein difierent elevation .views and I 1 I I are horizontal sections 1 2 a carriage 3 is and 19 show in two elevations on a larger scale and ina top part of the beds 1 and 2. Worms 4 cooperate with said toothed racks. The two worms 4 serve for moving the carriage 3 along the beds 1 and 2. To that end with each of the worms 1 a device for causing a step by step movement cooperates; this de vice is not illustrated in the drawings as it does not form part of the present invention and it may be of the type disclosed in the U. 5. Patent Specification No. 1,456,006 filed March 25, 1921. Each device is influenced by a feeler cooperating with a Warp in such a manner that during the proper working a step by step movement is imparted to the car riage 3 along the beds 1. and 2. If, however, the outermost of the not yet knotted threads of one warp is not opposite the outermost unknotted thread of the other warp only the worm 4 of that bed is moved the thread of which is not in the proper position. If new the worm 4 of the bed 1 is moved it causes a longitudinal displacement of the bed 1 relatively to the stationary bed 2, whereby the carriage 3 remains stationary; if the worm 4 of the stationary bed 2 only moved then the carriage 3 is displaced on the bed 2 and the bed 1 is caused to follow this movement. Any differences in the mutual position of the two warps are thus always compensated.

The operation of the knotting device and of the parts cooperating with the former and bein arranged on the carriage 3 is ransmitted by a cord pulley 5 mounted on the carriage The pulley 5 is driven from a stationary motor 158 (Fig. 5) by means of an endless string guided over auxiliary rollers. The pulley 5 transmits its turning motion by means of a worm drive 6 (Fig. 4) to a horizontal shaft 7 when the worm of drive 6 is coupled with the shaft of the pulley 5 by means of a clutch sleeve 8 displaceable on that shaft. The shaft 7 of the worm wheel drives by a chain drive 9 a horizontal shaft 10 which is arranged to the left hand side of the shaft 7, when looking at Fig. 2, and from the shaft 7 by a chain drive 11 a horizontal shaft 12 (Fig. 2) is driven which is arranged to the right hand side of the shaft 7 in Fig. 2. The shaft 10 drives by means of bevel gears 13 a. vertical shaft 14 and the shaft 12 drives by means of bevel gears 15 (Fig. 2) a verti Gal shaft 16. From the shaft 14 and by the intermediary of a bevel gear drive 17 and is in gear Wheels 18 (Figs. 1, 2 and 6) two t read separating spindles 19 and 19 are driven which cooperate with the one warp (a). The shaft 16 drives through the in termediary of a bevel gear drive 20 and spur gear wheels 21 (Figs. 2, 6) two thread separating spindles 22 and 22 cooperating with the second warp The thread separating spindles 19 and 19 as well as 22 and 22 arranged one above the other are conically tapered on their free ends and provided with a screw thread so that they tend to work themselves in between the threads of the respective warp arranged in front of them and to shift the threads towards the right when looking at Figs. 1 and 6. The threads of the two warps are subdivided into two groups by the aid of strings 23 passing through bores of the separating spindles, the two groups crossin each other between the respective two strings and separating spindles 1.9, 19 and 22, 22 respectively (Figs. 3, 5), whereby of the warp threads following each other in the row of threads one belongs to the one group of threads, the next to the other group of threads and so on. The separatii'ig spindles are provided with a beak 25 arranged in front of a flattened portion 24; of its stein. Between the upper separating spindles 19 and 22 respectively and the lower separating spindles 19 and 22 resp .ctively threac remover or transfer member 26 is arranged provided at its free end with a bunch of bristles 27 (Figs. 1, 6). Each thread remover is moved by one of the vertical shafts 1-1, 16 and by means of a crank pin 28 about a pin 29, on which a slotted arm 30 is guided, which by means of a pin 32, carries the arm to which the bunch of bristles 27 is connected either directly or by the interposition of an intermediate arm 31.

By means of the bristles 27 carrying out a movement on a circular path the thread removers 26 remove one thread after the other from both warps (tortlie purw 1e ofknotting these threads togeaier) by act always on the ix emost thread of each row, which is f""e to be moved owing to corresponding 1 of the beak of the r spe "1V8 up er 0; lower thread sep. .ing spindle 19, "2 or 19, The following thread of the row is detained by the beaks of both separat- 1g spindles 19, 19' and 22, 22, which beaks are opposite each other the moment they occupy their horizontal positions. The single th cad st arated from any of the two warps (rows) bears on a feeler arm 33 and 3% (Figs. 1, '3, 7 d 8) respectively of a lever or 3:

respect \eiy whereby the two feel'er levers 35, 36 mounted on a pin 37 are kept out of the path of movement of the angular end of a lever 38 which is mounted on a pin 39 (Fig. 1) and influenced by a tension spring 38 (Figs. 1, 2) and is periodically swung upwards and downwards by a disk it) provided with a cam facing, said disk being fixed to the vertical shaft 14. The pivot pin 37 Fig. 8, of the fe lcr levers 35, 36 is arranged on a car ing member a l which is swin able about L n 42 and ordinarily abuts inst a pin 43 of a plate 4 Springs 4L5 act upon the carryin member 41 and tend to keep the feeler levers 35, 36 in the path of movement of the lever 38. be carrying member 1-1 is provided with an abutment for a lever 4-7, he latter being mounted by a pin 48 in a -If'now from any reason one row has been separated, 1.e. transported cantilevered part 49 and pressed by a spring 50 against theabutment 46.-

against the feeler lever 35 or 36 respectively which during its further movement rocks the carrier 41 in the upward direction. Thereby sition shown in the abutment 46 of the carrier 41 causes aturning movement of the lever 47in the direction of the arrow indicated (Fig. 7) whereby the lever 47 lifts by the aid of .a pulling member 51 a locking lever 52- (Fig. 4) off the cam of a hand lever 53. The latter is thereupon turned about its pivot pin 55 by the influence of a tension spring 54 to release theclutch sleeve 8 (on the shaft of the cord pulley 5), In consequence thereof the drive of the worm gear 6 is cut out whereby all the parts driven by the latter arestopped. the second row has been severed by hand and therespective feeler' arm 33 or 34 has been loaded thereby, so that both levers 35 and 36 are held in their inoperative position the clutch sleeve 8 is again engaged by means of the hand lever 53, whereupon the worm gear 6 is againdriven and consequently also the working parts connected with the latter, the

hand lever 53 bears again with its cam facing against an abutment facing of the locking lever 52-and the machine continues its operation. I

On the shaft 7 of the worm wheel two cam disks 56 and 57 (Fig. 3) are fixed. "The cam disk 56 controls a two-armed lever 59 mounted on an axle 58, on the shorter arm of the lever 59 a spring 60 acts and a roller 61 is provided by means of which thelever 59 bears onthe cam disk 56. The lever59 is periodically rocked by the'cam disk 56 from the pofull linesin Fig. 3 into that shown in dash and dot lines, which latter position corresponds to that shown in section in Fig. 10, whereby a catcher 62' (shown in a plan view in Fig. 16) provided on thelonger arm of the lever 59 receives the two threads a and 7) severed from the two warps and loading the feeler levers 35, 36; the catcher 62 formed by a flat arm and a springy arm 63 (Fig. 16) which two arms grip between them two threads at and Z) to be tied to each other. The lever 59 (Fig. 3) is further provided with a thread clamping and cutting device, which is operated by the cam disk 57 as the latter controls a lever provided with a rollerand mounted on an axle 64; the lever 65 actuates by a rod 66 (Figs. 3, 11,12) a controlling rod 67 endwise displaceable in a guide 59: provided on the lever 59 a spring 68 pulls one thread'of only After a thread of the lever 65' against the cam'disk 57. The

controlling rod 67 movedvzup and down in the guide 59 carries a plate 69 provided with. a guide slot 70 (Figs. 11 and 13) and a guide facing 71, the .former 72 actuatingscissors, whose stationary part 73 is on a plate 74 fixed to the guide 59. The guide facing 71 of the plate 69 is provided for actuating a clamping lever 76 loaded by a spring 75, which lever is arranged in a bearing 77 carried by the guide 59.

cooperates with a lever The lever 76 is provided with two clamping jaws 78 arrangedin recesses and acted upon by springs fixed to the lever 76.

When the lever 59 swings inwardly in the direction towards the two warps the lever 72 for the scissors and the clamping "lever 76 are in their open position, so that the two threads a and bsevered from the two warps get into the scissors 72, 73 as well as into the clamping device formed by the lever 76 together-with the plate 74. When the lever 59 is in its inner position shown in dash and dot linesv in Fig. 3 the controlling rod 67 is moved in the downward direction whereby theguide plate '69 taking part in that movement causes the closing of the clamping lever 76 and of the scissors lever 72. Thereby the two threads a and severed from .the two warps are clamped between the plate 74 and the jaws 7 Sand are severedby the scissors 72, 73 from their end with which they are fas-, tened to the beds 1 and 2. The two threads at and I) held thus in readiness are thereupon caught by a clamp 81 (Fig; 9) of a rotating transfer member 82 and caused to take part in the movement of the latter; the transfer member 82 formed by a lever is provided at both ends with such thread'clamps 81, which cause alternately the transfer of the two threads to be connected with each other. After the transfer member 82 has received the two threads the lever 59 returns into its I initial position;

I The transfer member 82 is fixed to a vertical shaft 83 which is driven by means of two bevel wheel drives 84 and 85 (Figs. 9,2) from the vertical shaft 14, 86 denotes a bearing (Figs. 9, 2 and 1) for a shaft which carries one wheel each of the two bevelwheel drives 84 and 85. The drive 84icauses a-speed ratio of 1 2 between the movement of the transfer 79 which abut against an arm 76 of the lever. 59, which positions correspondto those shown in other figures. a

The rotating transfer member 82 lays the I two threads caught and entrained by it into a stationary fork 87 (Figs. 3, 10, 18,19, 25) provided on the knotting device, into a stationary clamping device 88 having a clamp ing lever 89 (Fig. 21) and into a stationary cutting device 90 having a lever 91 (Figs. 22, 23). The clamping lever 89 which cooperates with a spring loaded jaw 88 (Fig. 21) of the stationary part of the clamping device is periodically opened and closed by a rod 92 (Figs. 17, 18, 19, 3, 1) the rod 92, influenced by a tension spring 98, is controlled by a cam disk 95 fixed to a shaft 94 and provided with an adjustable cam 95 on its circumference (Figs. 17, 19, 20, 1). The shaft 94 is driven by a bevel gear drive 96 from a shaft 97 obliquely arranged on the carriage 3, a bevel gear drive 98 forms the driving connection between the shaft 9. and the horizontal shaft 10. A cam disk 99 lixed to the shaft 94 controls a rod 101 influenced by a tension spring 100 serving for imparting movement to the cutting lever 91. The clamping device 88, 89 as well as the scissors 90, 91 are provided with a slot enlarged in the upward directions (Figs. 21 and for introducing therein the two threads to be tied together. After the two threads have been laid by the rotating transfer member 82 into the fork 8'2, into the clamping device 88, 89 and into the scissors 90, 91, the lever 91 is automaticall turned from the open position into the closed position, whereby both thr ads are cut to the necessary length at their ends which have to be knotted together.

Between the fork 87 on the one hand and the clamping device 88, 89 and the scissors 90, 91 on the other hand a guide spindle 102 provided in the axial bore of which. the knotting needle 103 is arranged. The latter is periodically moved up and down by a lever 104, mounted on a pin 105 and provided with a roller 106 by means of which it cooperates with a lateral cam groove of the can) disl; 95 whereby the lever 10 1 obtains its movement. A lever 108 mounted on a pin 107 and swinging to and fro as a roller 109 on the lever cooperates with a cam groove on the cam disl-z 110 fixed to the shaft 9 1, is provided at its free end With a toothed segment 108 mesh,- ing with the toothed rim 111' of a tube 111 coaxially mounted on the stationary guide spindle 102. On the tube 111, which is alternately turned in one direction and then in the other a sleeve 112 is arranged which is also coaxial to the spindle 102 and which is coupled to the tube 111 as regards movements in the circumferential direction but free to carry out a displacement in the axial direction inasmuch a pin 113 fixed to the tube 111 projects into an axial groove of the sleeve 112. The sleeve 112 is provided with a cir cuinferential groove 111 for engagement with the control lever 115 which is mounted on a pin 116 (Figs. 18, 19) and cooperates by means of a roller 115 with a slot 117 oi a plate 117 (Fig. 18) fixed to the lever 108 which swings to and fro. The plate 117 moved by the lever 108 causes in its turn by the slot 117 an angular displacement of the lever 115 and thereby a corresponding axial. displacement of the sleeve 112 as well as of a thread layer fixed thereto. As may be seen in Fig. 18 the lever 115 is with its roller 115 in the lowest part of the guide slot 117 which raises somewhat more from that point towards its one end than towards its other end; in the initial position of the below de scribed movement of the lever 115 the roller 115 is in that part of the slot 117 which is between the lowest and the highest point or the slot. The thread layer provided on the sleeve 112 comprises between two plates 118 an abutment 119 for a spring loaded jaw 120. The knotting device A is carried by an arm 122 (Figs. 1, 8) extending trom its plate 121 and suspended from the horizontal shaft 10 and caused to bear against a guide rail 124 (Figs. 1, with-a roller 128.

The two threads a and b placed beside each other and held in readiness in the fork 87 (Figs. 19, and in the clamping device 88, 89 are arranged laterally of the guide spindle 102 and somewhat below an enlargement 102 provided on the upper end of the guide spindle 102 as may be seen from Fig. 25. On account oi": the turning movement of the sleeve 112 caused by the lever 108 the above mentioned thread layer 118-120 is turned in the direction 01 the arrow indicated in Fig. 19 towards the pair of threads held in readiness, which as is seen in Fig. 2e enters from the left hand side between the clamping parts 119 and 120 of the thread layer, the latter thereupon entraining the pair of threads a, F) with it and pulling it outo'f the clamping device 88, 89. The thread layer 118-120 now pulls the pair of threads a, Z) around the guide spindle 102 and moves in the downward direction. on account of the downward movement of the control lever 115 in the guide slot 117 of the plate 117 in order to pass thereupon, as is shown in dotted lines in Fig. 25, between the fork 87 and the guide spindle 102 and below the pair of threads a, Z); thus the first loop 0 F ig. 26) is formed with the pair of threads. Thereupon the thread layer 118120 raises as the control lever 11.5 is lifted by the rising part oi" the above mentioned guide slit 117, so that the thread layer brings the pair of threads 0, '7) over the end facing of the guide spindle 102 into the path of the knotting needle 103 which projects now beyond the end of the spindle 102 and a second loop (Fig. 26) is formed which is arranged behind the first loop 0. The knotting needle 103 is then withdrawn into the guide spindle 102 whereby it catches the pair of threads a, b at its free ends and pulls it out of the thread layer 1l8120, the s cond loop (Z being pulled oil the guide spindle 102 and through the first thread loop. Thus a knotis formed as is illustrated in Fig.

27 which is pulled tight as the pair of threads is caught by a clamp 125 (Fig. 17) of a rotating arm 126 and is tensioned against the pull of the knotting needle 103 and is subsequently removed for transferring the new thread knotted to the old'thread, the arm 126 with the clamp 125 causes also'the removal of the pair of threads from the guide spindle 102. During this proceeding the thread layer 1.18 120 is returned into its initial position by the turning of the sleeve 112-in the opposite direction. I 1 I The arm 126 provided with the thread clamp 125 which serves'for tightening the knot and for transferring the thread receives its turning movement by a set' of'spur gear wheels 127 which are driven from the shaft 94-by bevel gears 128, a shaft'129 and bevel gears 130.

Iclainiz 1.' A thread knotting device, particularly for uniting together the threads of warps, comprising in combination, a knotting needle, a guide member in which said knotting needle is endwise displaceable and provided with an end facing, a thread layer movable in the cir- .cumferential as well as'in an outward direction of said guide member,and means to operate said knotting needle "and said thread layerwhereby the latter first places the free ends of the two, threads to be united together around said guide member for forming'a first loop and thereafter moves outward relative to the guide member and needle and places the two threadsover said end facing into the path of the knotting needleforforming a second loop which is then pulled; through the first loop to form the knot. V I

2. A thread knotting device, particularly.

for uniting together the threads of warps, comprising in combination, a knotting needle, a guide spindle provided with an axial bore in which said knotting needle is endwise displaceable and provided with an end facing, a thread layer movable in the circumferential as well as inan outward direction of said guide spindle, and means to impart movement to said -knotting needle and said thread layer whereby the latter first places the freeends of the two threads to be united together around said guide spindle "for forming a first loop and thereafter moves outward relative to the guide member and needle and placesthe two threads over said end facinginto the path of the knotting needle for forming a'second loop which is then pulled through the first loop to,

form theknot'. Q i

' 3. A thread knotting device, particularly for uniting together the threads of warps, comprising in combination, a lrnotting needle, a guide spindle provided with an axial bore in which said knotting needle-[is endwise displaceable and provided with an end facing, a thread layer movable in the circumferential as well as in an outward direction of said guide spindle, aturnable and axially displaceable carrier coaxially arranged on said guidespindle, said thread layer being mounted on said carrier, and means to impart movement to said knotting needle and said thread layer whereby the latter first places the free ends of the two threads to be united together around said guide spindle for forming a first loop and thereafter moves outwardrelative to the guide member and needle and places the two threads over said end facing into the path of theknotting'needle for forming a second loop which is then pulled through the first loop to form the knot.

4. A thread knotting device, particularly for uniting together the threads of, warps,

comprising in combination, a knotting needle, a guide spindle provided with an axial bore in which said knotting needle is endwise displaceable and provided with an end facing, a thread-layer movablein the circumferential as well as in the axial di-' rection of said guide splndle, a turnable and 1 axially displaceable carrier coaxially arranged on'said guide spindle, said thread layer beingmounted on said carrier, gear means cooperating with said carrier for causing the turning movement of the latter,

a guide member cooperating with said carrier for causing the" axial movement of the latter, and means to cause the endwise displacement of said thread layer, whereby the latter places the free ends of the two threads to be united together and arranged beside each other around said guide spindle for forming a first loopand places thereupon the two threads; over said end facing into 1 the path of the knotting needle for forming a second loop which is then pulled through the first loop to form .the knot.

'5; A thread -'knotting devlcc, particularly for uniting together the threads of warps,

comprising in combination, I a knotting needle, a guide spindle provided withan axial bore in whichsaid knotting needle is endwise displaceable' and provided with an end facing, a thread layer movable in the circumferential as well as in the axial direc' tion of .said guide, a turnable and axially displaceable carrier coaxially arranged on said guide spindle, said thread layer being mountedonsaid carrier, a turning feeder adapted to bring the threads into the path I I V of movement of the thread layer, a stationary clamping device into which said threads are inserted by saidf'e'edenand means to'cause' the endwise displacement of said thread layer, whereby the latter places the free ends of the two threadsfto be united togetherand arranged beside each other around said guide spindle for forming a first loop and places thereupon the' two'threads over said end facing .into'th'epath of the knotting needle for forming a second loop which then pulled through the first loop to form the knot.

6. In a knotting machine, in combination, means for holding the two warps in close proximity, thread separating means adapted to separate the threads to be united together singly from both warps, a thread catcher and a transfer member, the former taking up the separated threads and presenting them to the transfer member, a thread layer having planetary and axial movement, and a knotting device, the thread layer receiving the threads from said transfer member and presenting them to the knotting device, the'latter comprising a knotting needle, and a guide spindle in which said knotting needle is endwise displaceable and provided with an end facing whereby a first loop of the two threads is formed by placing the latter around said guide spindle and a second loop by placing the two threads on the end facing of said guide spindle to be pulled through the first loop by the receding knotting needle.

7 In a knotting machine, in combination, means for holding the two warps in close proximity, thread separating means adapted to separate the threads to be united together singly from both warps, a thread catcher and a transfer member, the former taking up the separated threads and presenting them to the transfer member, a lower moved to and fro on which said thread catcher is mounted, a clamping device and a cutting device provided on said lever, a thread layer having planetary and axial movement and a knotting device, the thread layer receiving the threads from said transfer member and presenting them to the knotting device, the latter comprising a knotting needle, and a guide spindle in which said knotting needle is endwise displaceable and provided with an end facing, whereby a first loop of the two threads is formed by placing the latter around said guide spindle and a second loop by placing the two threads on the end facing of said guide s indle to be pulled through the first loop liy the receding knotting needle.

8. In a knotting machine, in combination, means for holding the two warps in close proximity, thread separating means adapted to separate the threads to be united together singly from both warps, a thread catcher and a transfer member, the former taking up the separated threads and presenting them to the transfer member, a lever moved to and fro on which said thread catcher is mounted, a clamping device and a cutting device provided on said lever, a control rod guided in said lever and adapted to open and close said clamping device and to actuate said cutting device, a thread layer having planetary and axial movement, and a knotting device, the thread layer receiving the threads from said transfer member and presenting them to the knotting device, the latter comprising a knotting needle, and a guide spindle in which said knotting needle is endwise displaceable and provided with an end facing, whereby a first loop of the two threads is formed by placing the latter around said guide spindle and a second loop by placing the two threads on the end facing of said guide spindle to be pulled through the first loop by the receding knotting needle.

9. In aiknotting machine, in combination, means for holding the two warps in close proximity, thread separating means adapted to separate the threads to be united together singly from both warps, a thread catcher and a transfer member, the former taking up the separated threads and presenting them to the transfer member, feeler levers with which the separated threads co operate previous to being transferred by said transfer member, driving means for the machine, means to cutout said driving means and influenced by said feeler levers, a thread layer having planetary and axial movement, and a knotting device, the thread layer receiving the threads from said transfer member and presenting them to the knotting device, the latter comprising a knotting needle, and a guide spindle in which said knot-ting needle is endwise displaceable and provided with an end facing, whereby a first loop of the two threads is formed by placing the latter around said guide spindle and a second loop by placing the two threads on the end facing of said guide spindle to be pulled through the first loop by the receding knotting needle.

10. In a knotting machine, in combination, means for holding the two warps in close proximity, thread separating means adapted to separate the threads to be united together singly from both warps, a thread catcher and a transfer member, the former taking up the separated threads and presenting them to the transfer member, feeler levers with which the separated threads cooperate previous to being transferred by said transfer member, driving means for the machine, an abutment moved to and fro and out of the path of which said feeler levers are held when loaded by the warp threads, a carrier on which said two feeler levers are mounted and displaced by said abutment as soon as one of said feeler levers is unloaded, means to cut out said driving means and acted upon by said carrier, a thread layer having planetary and axial movement, and a knotting device, the thread layer receiving the threads from said transfer member and presenting them to the knotting device, the latter comprising a knotting needle and a guide spindle in which said knotting needle is endwise displaceable and provided with an end facing, whereby a first loop of the two threads is formed by placing the latter around said guide spindle and a second p byv placing the two threadson the end facing of said guide spindle to be pulled through the first loop by the rece In testimony name to this specificatlon.

WILLIBALD H ding knotting needle. whereof, I have signed my AMMER. 

